At Impinge we follow two models of payments.
2. Fixed Price
In hourly model, our rates vary from $15 to $25 depending upon the service.
We also have a FT (Full Time) model where we provide a resource full time and we bill on monthly basis.
In Fixed Price model, we work on milestone basis.
Normally the terms are
Milestone 1 - 40% of the total cost: Upfront Payment.
Milestone 2 - 40% of the total cost: On Beta.
Milestone 3 - 20% of the total cost: Upon Approval